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Node.js client for, formerly hoptoad.
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Latest commit 30529dd @shime shime Merge pull request #59 from merqlove/fix-instanceof-on-error-params
Fix getter of params and session variables.


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Node.js client for


npm install airbrake

Basic usage

The common use case for this module is to catch all 'uncaughtException' events on the process object and send them to Airbrake:

var airbrake = require('airbrake').createClient("your api key");

throw new Error('I am an uncaught exception');

Please note that the above will re-throw the exception after it has been successfully delivered to Airbrake, causing your process to exit with status 1.

This can optionally be disabled by passing false to handleExceptions:


You probably never want to use this, unless you fully understand the problems with recovering from exceptions.

If you want more control over the delivery of your errors, you can also manually submit errors to Airbrake.

var airbrake = require('airbrake').createClient("your api key");
var err = new Error('Something went terribly wrong');
airbrake.notify(err, function(err, url) {
  if (err) throw err;

  // Error has been delivered, url links to the error in airbrake

Usage with Express

A custom error handler will need to be set for Express:

Express 4.X

var airbrake = require('airbrake').createClient("your api key");

Express 3.X

var airbrake = require('airbrake').createClient("your api key");

Express 2.X

var airbrake = require('airbrake').createClient("your api key");


This screenshot shows an Airbrake error send from this module:



  • Automatically add process.env as well as other information when sending notifications
  • Detect and fix circular references in error context information
  • Support for all features of the 2.1 notification API
  • Support for long-stack-traces
  • Optional auto-handler for uncaughtException events
  • Provides notification url linking to Airbrake in notify() callback
  • Timeout Airbrake requests after 30 seconds, you never know

Adding context to errors

The notify() method automatically adds the following context information to each delivered error:

  • error.class: (err.type string if set, or 'Error')
  • error.message: (err.message string)
  • error.backtrace: (err.stack as parsed by stack-trace)
  • request.url: (err.url, see airbrake.url);
  • request.component: (err.component string if set);
  • request.action: (err.action string if set);
  • request.cgi-data: (process.env, merged all other properties of err)
  • request.params: (err.params object if set)
  • request.session: (err.session object if set)
  • server-environment.project-root: (airbrake.projectRoot string if set)
  • server-environment.environment-name: (airbrake.env string)
  • (`airbrake.appVersion string if set)

You can add additional context information by modifying the error properties listed above:

var airbrake = require('airbrake').createClient("your api key");
var http = require('http');

http.createServer(function(req, res) {
  if (req.headers['X-Secret'] !== 'my secret') {
    var err = new Error('403 - Permission denied');

    err.url = req.url;
    err.params = {ip: req.socket.remoteAddress};

Unfortunately uncaughtException events cannot be traced back to particular requests, so you should still try to handle errors where they occur.

Removing context from errors

In some scenarios you might want to filter some context to never show up in Airbrake. For example you might have a private key loaded in your environment memory, or your user has some critical data in his session, and you want to hide that.

This can be done by hooking into the 'vars' event like so:

airbrake.on('vars', function(type, vars) {
  if (type === 'cgi-data') {
    delete vars.SECRET;

Tracking deployments

This client supports Airbrake's deployment tracking:

var airbrake = require('airbrake').createClient("your api key");
var deployment = {
  rev: '98103a8fa850d5eaf3666e419d8a0a93e535b1b2',
  repo: '',

airbrake.trackDeployment(deployment, function(err, params) {
  if (err) {
    throw err;

  console.log('Tracked deployment of %s to %s', params.rev, params.env);

Check out the airbrake.trackDeployment() API docs below for a list of all options.


var airbrake = Airbrake.createClient(key, [env])

Airbrake.createClient() returns a new Airbrake instance.


  • key - Your application's Airbrake API key.
  • env - The name of the server environment this is running in.

airbrake.key = null

Your application's Airbrake API key.

airbrake.env = process.env.NODE_ENV || 'development'

The name of the server environment this is running in. = 'https://' + os.hostname()

The base url for errors. If err.url is not set, is used instead. If err.url is a relative url starting with '/', it is appended to If err.url is an absolute url, is ignored.

airbrake.projectRoot = null

The root directory of this project.

airbrake.appVersion = null

The version of this app. Set to a semantic version number, or leave unset.

airbrake.protocol = 'https'

The protocol to use.

airbrake.developmentEnvironments = []

Do not post to Airbrake when running in these environments.

airbrake.timeout = 30 * 1000

The timeout after which to give up trying to notify Airbrake in ms.

airbrake.requestOptions = {}

Additional request options that are merged with the default set of options that are passed to request during notify() and trackDeployment().


Registers a process.on('uncaughtException') listener. When an uncaught exception occurs, the error is sent to Airbrake, and then re-thrown to kill the process.


A custom error handler that is used with Express. Integrate with Express middleware using app.use().


  • disableUncaughtException: Disables re-throwing and killing process on uncaught exception.

airbrake.notify(err, [cb])

Sends the given err to airbrake.

The callback parameter receives two arguments, err, url. err is set if the delivery to Airbrake failed.

If no cb is given, and the delivery fails, an error event is emitted. If there is no listener for this event, node will kill the process as well. This is done to avoid silent error delivery failure.

airbrake.trackDeployment([params, [cb]])

Notifies Airbrake about a deployment. params is an object with the following options:

  • env: The environment being deployed, defaults to airbrake.env.
  • user: The user doing the deployment, defaults to process.env.USER.
  • repo: The github url of this repository. Defaults to ''.
  • rev: The revision of this deployment. Defaults to ''.


Besides bug fixes, we're happy to accept patches for:

  • Automatically parsing repo and rev from the local git repository when calling airbrake.trackDeployment(). This can be done via exec(), but must not be done when specifying repo / rev by hand, or if they are set to false.

If you have other feature ideas, please open an issue first, so we can discuss it.



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